Machine for making double-faced corrugated paper.



s. M. LAAGSTUN.

MACHINE FOR MAKING DOUBLE FACEDCQ'RRUGATED PAPER. APPLICATION F1LEn-sE.T.1s,'1915.

@u 42,3'. (1Mo/5142.13

SAMUEL M. LANGSTON, OF WENONAH, NEW JERSEY.'

'MACHINE FOR MAKIG DOUBLE-FACEI) CORBVJUGATED PAPIER.

il .179.92m

Specification of Letters Yatent.

Patented Apr. l, 1916i Application tiled September 13, 1915. Serial No.50,335.

all whom it may concern.' Be it known that I, SAMUEL M. LANGS- 'ToN, acitizen of the United States, and resident of Nenonahj in the county ofGloucester and State of New Jersey, have invented certain new and usefulImprovements in Machines for Making Double-Faced Corrugated Paper, ofwhich the following is a on to said platform or table by means of one'or more pressure plates.

One main object of my invention is to so mount .the pressure plate thatit may yield as material of different thickness is passed thereunder andso that the degree of pressure exerted upon the material may be variedat will.

Other features will be pointed out more particularly hereinafter. A Inthe accompanying drawing, I havey shown rather diagrammatically a sideele-f vation of a machine constructed in accordance with my invention, aportion of the machine being shown in longitudinal section,

This machine involves only one embodiment of my, inventionMbutvariousl'other forms may be designated withinthe spirit of my inventionand without departing from the scope of the appended claims.

I have illustrated the machine as includ- -ing a main frame 10 whichsupports a table f or platform over which the materialpasses.

This table or platform may be formed of a single continuous plate orsheet or 'it may be inade up of separate sections.

As illustrated I employ three sections 11, 12 and 13 arranged with theirupper surfaces in the same laneV and closely adjacent to each other.Above this table I provide yielding means for pressing the lmaterialtoward the table. Such means. includes a superposed plate held inparallelismwith the' platformand movable in a direction having avertical component. There may be any desired number Aof these plates orthe plate may be made up of any desired number of sections. The sectionsmay be connected together or they may be and preferably are capable ofindependent movement. As shown, the plate includes three sections 14, 15and 16, each'supported by two parallel links 17 and 18 from a superposedframe-part. These links are' preferably all of the same length andextend downwardly and toward the delivery end of the machine when thesuperposed plate sections rest directly upon the platform. Thesuperposed plates are capable of moving in parallelism and inl adirection having vertical and horizontal components. The plates willrest directly upon the material and they may be weighted or relieved ofweight so as to apply the desired pressure. This means for varying thepressure maybe of various different forms, but a very simple andeiiiient form involves the use of horizontally disposed arms 19 eachrigidly connected to one of the links of an upper plate or platesection. As illustrated, each link 17 has an upwardly extending arm 20carrying the corresponding horizontal arm 19 and upon each arm 19 is aweight 21. The weights are adjustablelengthwise of the arms 19 and maybemounted on either end,

that is, upon either side of the arm 20. With the weights as shown inthe drawing, that is, on the arm.portions projecting toward the deliveryend of the machine,they will tend to swing the arms :20 toward thedelivery end and will thus tend 'to press the plate sections lll, 15 and16 down -on to the material. Their effectiveness may be varied byadjustment along the length, and by putting them on the oppositeprojecting portions of the arms 19 they will tend to counteract theweight of the plate sectionsfand will tend to lift the latter off thematerial. Thus,- the e'ective pressure exerted by the superposed latesmay be either increased or decreased rom normal at will, dependent uponthe character of the material operated upon, the nature of the adhesive,the temperature, etc.

The superposed plate sections are, as previously stated, independentlymovable and gradually increasing or decreasing pressures may be exertedon the plate sections toward the delivery end of the machine. In orderto simultaneously raise all of th supenposed plate sectionsV and permitthe pressure plates during the threading of the material therebeneath,any suitable means may be employed. As illus-- trated, each upwardlyextending arm 2O has a pin 22 operating in a longitudinally exi tendingslot or recess -n a horizontal bar 23. The length of these grooves orrecesses permits of the independent movement of the normal opera# tionof the machine While, the bar 23 in the direction of the arrowfthe` pins22 will engage with the ends of their respective recesses or slots andall of the pressure plates will beraised to the desiredl position abovethe platform.

The material delivered tothe pressureplates includes a combined sheetmade up of a facing sheet A and a corrugated sheet B, and a secondfacing sheet C freshly applied to the crowns of the corrugations of thesheetA opposite to the facing sheet A. The sheets A and B may bedelivered in any suitable man-ner and any suitable means may be providedfor"`applying adhesive to the crowns of the corrugations. In thedrawing, I 'have shown an adhesive receptacle 24 ,having a roller 25dipping into the adhesive and a second'roller 26 operating to transferthe adhesive from the roller 25 to the crowns of the corrugations.

The second facing sheet may be taken from any suitable source of supplyas for instance a .roll 27. On its way from the roll to the adhesivecovered corrugations of the sheet B, -it is passed over combined heatingand tension means which also embodies certain features of my invention.As illustrated, I employ two drums 28 and 29 and two idler rollers 30and 3l. The roller 30 is carried by arms 32 mounted'concentric with theaxis of the drum 28 while the roller 31 is carried by arms 33 concentricwith the Vupper drum 29. These arms may be swung to the position shownin dotted lines in the,h drawing so that the paper may pass from theroll 27 upwardly betweenthe roller 30 and the drum 28 and thence betweenthe roller 31 and the drum 29 and over the latter to the platform. Thisfacilitates an easy threading of the machine. The drums are preferablyinternally heatedv as for instanceby passing steam through the journalsthereof and the arms 32 and 33 are normally swung to the position shownin solid lines in thexdrawing so that the facing sheet C is maintainedin engagement with the peripheral surfaces'y of both the drums *55,1adhesive while the combined sheet is passing 28 and 29 for aconsiderable portion of "saidl surfaces. Thus, the sheet C isheated-before it reaches the platform and before it comes into contactwith the adhesive coated corru-I gations of the; middle sheet B. "Thepreliminary heating of the facing Sheet C may; in some cases, be amplysuflieicnt .to cause the complete drying of the by pulling on f steambox or to the first two, or to all three as may be desired. The pressureplates may have steam b'oxes 38 to which steam may be supplied from aconduit 39 and independent valved connections 40. Thus, only the first-pressure plate or of 'them may be heated.

Any suitable means whatsoever may be any desired number A employed forcontinuously or intermittently drawing the material'through the machineand beneath the pressure plates. This may include superposed-beltshaving parallel runs or pairs of rollers, or any other means known inthetrade. I have illustrated rather' conventionally a feeding means whichincludes a belt 42 carried by drums 43 and having its upper runsupported on a plurality of 'rollers 44. Resting upon the vmaterial andabove the drums 43 and the belt, I may employ elther a second belt or aplurality of rollers 45. `These are preferably driven by suitablegearing so as to have a rate of surface travel substantially equal tothat of the belt. This feeding means.l serves to pull the product frombeneath the pressure plates and the latter, together with the supportingtable or platform, operate to hold the facing sheet C in properengagement with the corruga tions-of the sheet B While the adhesive Visdried. As previously stated, the drying may be facilitated -by heatingthe platform angl ,s interrupted, thepressure plates may instantly beraised out of engagement with the material and the arms 32 and 33 swungtothe dotted line positions to entirely free the sheet C from the drum28 and partially free it from the drum 29. By thus relieving themateriali from pressure and a largeportion of the heat, the saidmaterial will not be injuriously affected ifit be permitted to remain inthe machine for a may be short time after the latter has been stopped.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is: 4

.Li'zasei y terial as the latter passes over said platterial asv thelatter form,V means permitting the independent movement of said pressure.plates upwardly and toward the delivery end of the machine, and meansfor simultaneously raising all of said plates.

3. A machine of the class described, in-V cluding a supporting platform,a plurality of independentpressure plates arranged in succession' andadapted to rest upon the material as the latter passes over saidplatform, means permitting the independent movement of said pressureplates upwardly and toward the delivery end of the machine, and meansfor heating said platform.

Il. A machine of the class described, including a supporting platform, aplurality of independent pressure plates arranged in succession andadapted to rest upon the mapasses over said platform, means permittingthe independent movement of said pressure plates upwardly ,Y and towardthe delivery end of themachine,

and means for heating said pressure plates.

A machine of the class described, including a supporting platform,aplurality of independent pressure plates arranged in succession andadapted to rest upon the material as the lattter passes over said platform, means permitting the independent movement of said pressure platesupwardly andtoward the delivery end of the machine, means for heatingsaid platform, and means for heating said pressure plates.

'6. A machine'of the class described" including a support for thematerial, a superposed pressure plate, a pair of parallel linkscontrolling the movement of said pressure plate, and means for varyingthe effective pressure exerted by the latter.

T. A machine of the class described including a support for thematerial, a superposed pressure plate, a pair of parallel linkscontrolling the movement of said pressure plate, and a weight adjustablein respect to said links for varying the effective pressure exerted bythe latter.

8. A machine of the class described inn cluding a support for thematerial, a superosed pressure plate, a pair of parallel linkscontrolling the movement of saidw pressure plate, an arm connected toone of said links .adapted to rest extending substantially horizontallyin respect thereto, and a weight adjustable along the length of saidarm.

9. A machine of' the class described, including a support for thematerial, a pressure plate adapted to rest upon the material, a pair ofparallel links connected to said pressure plate and extending downwardlyand toward the delivery end' of the machine to permit the upwardandforward move ment of said pressure plate, and a weight connected toone of'said linksand adjustable to increase or decrease the effectivepressure of said plate.

10. A machine of the class described, including means for heating afacing strip,

means for applyingv -adhesive to the 'crowns of thev corrugations of asingle faced strip, a support over which the combined sheet may pass, apressure v'plate for yieldingly holding the combined sheet intoengagement with said support, and feeding means for causing the movementof said combined sheet over said support and beneath said pressureplate.

11. A machlne of the classdescribed, in-

cluding a heated druma roller adjustable said drum to vary the Acircumferentially of extent of the peripheral surface of said drum withwhich a facing sheet may engage,

means for bringing a corrugated sheet into engagement with said facingsheet, a heated table over which the combined sheet may pass, a yieldingpressure plate for engagement with the material as the latter passesover said table, Vand means for raising said pressure plate upwardly outof engagement with the material.

12. A machine of the class described, including a heated drum, a rolleradjustable circumferentially of said drum to vary the extent of theperipheral surface of said drum 'with which a facing sheet may engage,means for bringing a corrugated sheet into engagement with said facingsheet and holding them in engagement with one an other as they are drawnthrough,I the niachine.

13. A machine for making double faced corrugated paper including asupport Jfor the material, a plurality of independent pressure platesarranged in succession upon the material as it passes over saidplatform, and a separate pair of links connected to each pressure plateand permitting a movement of each plate independently of the otherplates and upwardly and in the directibn of travel of the material.

v 14. A machine of the class described, in-

cluding a support for the material, a pluv effective pressure of eachplate greater or less than the normal pressure resulting from the Weightof the plate.

15. A machine of the class described including a support'for thematerial, a plurality of pressureplates arranged in suc cession andadapted to rest upon the material 'as the latter passes over saidsupport, and separate guiding means foreach plate for 'holding it inparallelism with said support andl permitting. a movement upwardly andin the direction of movement of the material of slightlyvarying'thickness passing therebeneath.

16. A machine for making double faced corrugated ,paper including meansfor applying adhesive to the crowns of the corru` Y gations of a s1nglefaced 'corrugated sheet, means for delivering a facing sheet to theadhesive covered crowns, a supportI over which the combined sheet'passes and engaging with said facing sheet, a plurality of independentpressure plates arranged in succession and adapted to rest upon thecombined sheet as the latter passes over said support, and guidingmeansfor each plate permitting of the independent movement of said platesupwardly as irregularities in the Copies of this patent may beI obtainedfor ve cents each, by addressing the"Commissioner of Patents, I

ing With said facing sheet, a plurality of independent pressure platesarranged in succession and adapted to rest upon the com bined` sheet asthe latter passes over said support, guiding means for each platepermitting of the independent movement of said plates upwardly asirregularities in the thickness of the combined sheet pass therebeneath,and means for simultaneously raising all of sald plates out ofengagement with 4sald combined sheet.

Signed at Camden in the county of Camden and State of New September, A.D. 191e.

SAMUEL M. LAN GSTON lVitnesses:

HARRY J. GREEVE, M. TEITCHMAN.

Washington, D. C.

Jersey this 7th day of

